Regulator for lever time-movements.



J. J; 'BUSENBENZ.

REGULATOR FOR LEVEB TIME MOVEMENTS. APPLICATION FILED JAN-2, I915.

1,144,026. Patented June 22, 1915.

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THE NORRIS PETERS CO.. PHO7O LITHO.. WASHINGTON. D. C.,

,1 To dill whom concern:

7 Be it"kno'wn that I,&JAcoB useful Improvement in- Regulators for Levera sp i at Time-Movements, of

which the following is My invention relates to *an improvement inregulators ,for the. hair-spr ngs of clocks of the socalled levertype,and Watches and it is my object to provide-asimple and dufrableconstruction of such'regul'atorwhich shall enable regulation of atime-movement; equipped with? it. to be ,efiectediwith great I facilityand with the utmost'nicety,

Inthe'acc ompanying drawing, F gure 1 a broken face view of a clockframe, with the dial removed and showing my improved regulator in frontelevation; Fig 2 shows the sameby a broken view in side elevation,

: with the clock-dial in section, and Fig.3 is a section on line 3,Fig. 1. The views .illustra normally large scale. I The frame 4, ofwhich one side is presented inFig. 1, covered by a dial; 5, shown inFig; 2, supports the mechanism of a clock, of

"'whichonly sufiicient isj illustrated in the 'drawing'to enable myimprovement and its operation to be readily understood. The

I parts shown of theclock-mechanism are the i h ing'a curved arm10'eXtending from it at.

balance-stafl 6 carrying the balance-wheel 7,

I x and the. hair-spring 8. On the outer face of the frontmember of theframe, nearits upper end, is journaled a segmental gear 9 hav- I 7i oneside of the j ournal and terminating in a 'longitudinallyslottedextensionll projecting across the top of "the outer coil of thehair-spring,*which coil passes through the slot and fastenedat itsadjacent end to the frame, as usual. The extension bears at the upperedge of its slot downwardly against the outer coil. Y'By turning thegear 9 in one,

direction on its pivot, therefore,,the effective length of thehair-spring is augmented, and it is shortened by turn'ingthe gear intheopposite direction. For turning the gear a worm 12 meshes with it,the "worm-shaft,

"which. carries on one end a peripherally serrated wheel 13. projecting,for access,

through an opening (Fig. 2 in the dial, be-' Specification of LettersPatent.

the parts" on an ab-- V ing'spring-supportedr The spring 14 sup- I v J BsE'NBE z', a ci'tizenof the United "States,.'residing at Grand Rapids,in the county of Kent and. State of Michigan, have invented anew andporting the worm is shown tocomprise a horizontal lower member 14?provided on one end with adepending-ear 14*, through which the spring isfastened touthe frame, and a vertical member 14, of generalv cross form,terminating at its upper end in a tongue 14?; and the section involvingthe r 1 f Patented. June 22, 1915.- ,C Applicationfi1edJ'anuary2,'1915.,.S eria11 Io.85. 1 p

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cross-piece 'and't-ongue is offset backwardly, 1

the cross-piece being providedfon' its ends with forwardly V projectingv perforated ears 14 v forming bearings for journalingthe I worm shaft.In" the front member of the frame 4 is an opening 15 of the threedifferent cross-sectional dime'nsions represented in Fig; 1. Thehand-wheel 13 projects through this frame-member in the larger sectionof the opening, the offset-section of the spring-member 14 projectsbackwardly through the intermediate section of the same and thetongue 14isthereby caused to bearvflatwise resiliently against the rear faceof-the frame-member above that section of the opening,and the worm worksin the relatively narrow, third section of the opening. 7 The worm-gearregulator isthus readily accessible for operating it, at the face of thetime-piece, by turning the wheel 13 in the required direction tocausethe 'worm to actuatethe gear 9-for moving the finger to adjust thesprin'g'8;

The primary lmportance of spring-supporting the'worm is to keep ittightly in engagement-with the segmental gear and 3 thereby frictionallyhold the wheel'13 and gear against too ready'or accidental turning. Thenicety with which the spring 8 may be regulated by means of my improvedregulator is readily apparent; and this nicety is of particularimportance with. any timemovement which is accurate, in the sense of notvarying greatly in time-keeping,as

' is the clock of my Patent No. 973,854, dated October 25, 1910, forusewith which I have more immediately designed my present improvement. 7

I realize that considerable variation is possible in the details ofconstruction thus specifically shown and described, and I therefore wishto be understood asnot intending by illustrating a single, specific orpreferred embodiment of .my invention, to

be-limited thereto.

What I c laim as new anddesire to secure by Letters'Patentis V 1 r 1. Incombination with a tunemovement,

said gear.

f 2. In combination'lwith a time movement,

a" regulator comprising ajsegmental gear with an extension journaledonithe movement-frame and having an arm extending into mo able engage-'ment with the outer coil of the hainspring of saidmovem'ent,aspring-support on said frame, and a worm ournaled'onsaid supfport to mesh wi-th saidsgean. V 3. In combinationwith a time-movement, aregulatorbomprlsing a segmental gear journaledonth e' front member "ofthe move-v ment frame :and having j an arm provided movably engaging the1 outer 'coil of the hair-spring of-said movement, an openingin" saidframe-member, a sprung-support secured on sa d frame-memberv toextendnto-said'opening, and a Worm I shapedmemberhaving an oflset section e1;

having a -whee-cm' in Sh jbfi gf' V 6 1 on said support at said openingts wengage th m-Withxsaid-gear. 1 .u I L 1 4;: In combination: with a:time-mo rementgiiio a .,,1 egu1ator 'comprlslngla segmental gearjournaled .on the front member of the movementrfra'me 'an'd'iha'vinganarm providedv Witha slotted extension movably engaging- "if iii-theslot the outer coilof the hair-spring of saidmovement, an opening insaid frame-' member, a 'springsupport havingalower' member secured nearone end to said frame-1; member and an upright cross-shapedmem -iberterminating in a, tongue, said cross-" 4 tending b ackwardly insaidopenin'g' to bear said" tongue against gthe rear. face offisa idframe-member and being provided with journal bearings, a worm" on ashaft four-1 4 I na1edin-saidbearings' to engage the worm With saidgear, and a hand-Wheel onfth Shaftin said opening,

' JACOB In presenee of-- V A. O.F1semm, V 7 1+; M. RONDEAU. n V

J. BU NBENZ;

, 21? 1 3 vat nt may b o bt ndyf or five cents each, by addressing'thedominis aio ne r latent l i j 3T iwall ingtomlfl. I i

